21071323

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1741}}^1$

素因数の和:1787

約数の個数: 24

約数和(自身を含む): 27802320

約数和(自身を除く): 6730997

約数列:

[1, 7, 13, 19, 49, 91, 133, 247, 637, 931, 1729, 1741, 12103, 12187, 22633, 33079, 85309, 158431, 231553, 430027, 1109017, 1620871, 3010189, 21071323]

約数ペア:

[(1, 21071323), (7, 3010189), (13, 1620871), (19, 1109017), (49, 430027), (91, 231553), (133, 158431), (247, 85309), (637, 33079), (931, 22633), (1729, 12187), (1741, 12103)]